An agreement signed Monday between the Centers for Medicare and Medicaid Services and the Department of Homeland Security has given U.S. Immigration and Customs Enforcement access to the personal data of all Medicaid enrollees, according to a report from The Associated Press.

U.S. Immigration and Customs Enforcement officials will gain access to personally identifiable information for all of the nation’s 79 million Medicaid enrollees.

Civil rights groups sued the Trump administration on Wednesday in a bid to stop the government’s policy of allowing Immigration and Customs Enforcement officers to arrest undocumented migrants who show up for immigration hearings at courthouses.